For sustained energy and metabolic benefits, ongoing monthly injections are typically recommended
Acknowledgements Our work described in this article was supported by grants from the US Parkinson's Disease Foundation, the Swedish Parkinson's Disease Foundation and the Swedish Research Council, and by awards from the Swedish Society for the Neurologically Handicapped and the ke Wiberg Foundation
Theres no bargaining research clearly shows that consuming fortified foods alone may be insufficient to cover your B12 needs and, as described above, when symptoms of B12 deficiency develop, it may be too late to repair the damage
Szener ZC, Cevhertas L, Nadeau K, Akdis M, Akdis CA
Methylcobalamin costs 3-5 times more than cyanocobalamin in pharmaceutical-grade form